<template>
    <div>
         <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>
        权限管理
      </el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
        <!-- 添加角色按钮区域 -->
        <el-row>
            <el-col>
                <el-button type="primary" @click="addRole">添加角色</el-button>
            </el-col>
        </el-row>
        <!-- 角色列表区域 -->
          <el-table :data="rolesList" border stripe>
              <!-- 展开列 -->
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                        <!--渲染一级权限 -->
                         <el-col :span="5">
                             <!-- 插值表达式 -->
                             <el-tag closable @close="removeRightsById(scope.row,item1.id)">
                             {{item1.authName}}
                             </el-tag>
                             <i class="el-icon-caret-right"></i>
                         </el-col>
                        <!--渲染一级权限和三级权限 -->
                         <el-col :span="19">
                             <!-- 通过for循环 嵌套渲染二级权限 -->
                             <el-row :class="[i2 === 0 ? '' : 'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                 <el-col :span="6">
                                      <el-tag type="success" closable @close="removeRightsById(scope.row,item2.id)">
                                        {{item2.authName}}
                                      </el-tag>
                             <i class="el-icon-caret-right"></i>
                                 </el-col>
                                 <el-col :span="18">
                                     <el-tag type="warning" v-for="(item3, i3) in item2.children" :key="item3.id" closable @close="removeRightsById(scope.row,item3.id)"> 
                                        {{item3.authName}}
                                     </el-tag>
                                 </el-col>
                             </el-row>
                         </el-col>
                    </el-row>
                </template>
            </el-table-column>
            <!-- 序列号 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini">
                        编辑
                    </el-button>
                    <el-button @click="Deletefunction(scope.row.id)" type="danger" icon="el-icon-delete" size="mini">
                        删除
                    </el-button>
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">
                        分配权限
                    </el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-card>

    <!-- 分配权限的对话框 -->

    <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRightDialogClosed">
  <!-- 树形控件 -->
   <el-tree :data="rightslist" :props="treeProps"  show-checkbox node-key="id" default-expand-all
   :default-checked-keys="defkeys" ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>


<!-- 添加角色的对话框 -->
<el-dialog @close="roleDialogClosed"
  title="添加角色"
  :visible.sync="getaddRole"
  width="50%">
   <el-form :rules="roleDataRules" :model="roleData" ref="roleDataRef" label-width="80px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="roleData.roleName"></el-input>
  </el-form-item>
   <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="roleData.roleDesc"></el-input>
  </el-form-item>
   </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="getaddRole = false">取 消</el-button>
    <el-button type="primary" @click="postroleData">确 定</el-button>
  </span>
</el-dialog>


    </div>
</template>

<script>
export default {
    data () {
        return {
            //所有角色数据
            rolesList:[],
            // 控制显示分配权限对话框的显示与隐藏
            setRightDialogVisible: false,
            //所有的权限数据
            rightslist:[],
            //树形控件的属性绑定对象
            treeProps: {
             label: 'authName',
             children: 'children'
            },
            //默认选中的节点id值数组
            defkeys: [],
            // 当前即将分配权限的id 
            roleId: '',
            // 添加角色的对话框的显示和隐藏
            getaddRole: false,
            // 添加角色的表单数据
            roleData: {
                username:'',
                description:''
            },
             // 添加表单验证规则的对象
      roleDataRules:{
        roleName: [
          {required:true,message:'请输入角色名',trigger:'blur'},
          {min:2,max:4,message:'用户名长度2到10个字符之间',trigger:'blur'}
        ],
         roleDesc: [
          {required:true,message:'请输入角色描述',trigger:'blur'},
          {min:6,max:16,message:'密码长度6到16个字符之间',trigger:'blur'}
        ]
      },
        }
    },
    created () {
        this.getRolesList()
    },
    methods: {
        //获取所有角色的列表
       async getRolesList () {
          const {data: res} = await this.$http.get('roles')
        //   console.log(res);
          if(res.meta.status !== 200) {
              return this.$message.error('获取角色列表失败')
          }
          this.rolesList = res.data
        //   console.log(this.rolesList);
          
        },
        //根据id删除权限
        //role角色数据
        // 要删除的权限的Id
       async removeRightsById (role,rightId) {
            //弹框提升是否删除
          const rightIdres = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
          }).catch(err => err)
        //    console.log(res);
            if(rightIdres !== 'confirm') {
                return this.$message.info('取消了删除!')
            }
            // console.log('确认删除');
          const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if (res.meta.status !== 200) {
               return this.$message.error('删除权限失败!')
            }
                // this.$message.success('删除权限成功!')
                // 更新列表
                // this.getRolesList()
                //直接赋值更新列表
                role.children = res.data
        },
        //展示分配权限的对话框
       async showSetRightDialog (role) {
           this.roleId = role.id
            //获取所有权限的数据
          const {data: res} = await this.$http.get('rights/tree')
        //   console.log(res);
         if(res.meta.status !== 200) {
             return this.$message.error('获取权限数据失败!')
         }
            //获取到的权限数据保存到data中
             this.rightslist = res.data
            console.log(this.rightslist);
            //递归获取三级节点的id
            this.getleafkeys(role,this.defkeys)
            //显示
            this.setRightDialogVisible = true
        },
        //通过递归的形式 获取角色下所有三级权限的id 保存到defkeys数组中z
        getleafkeys (node,arr) {
            // 如果当前node节点不包含children 属性 则是三级节点
            if(!node.children) {
                return arr.push(node.id)
            }

            node.children.forEach(item =>
            this.getleafkeys(item, arr))
        },
        // 监听分配权限对话框关闭事件
        setRightDialogClosed () {
            this.defkeys = []
        },
        // 点击为角色分配权限
       async allotRights () {
            const keys = [
              ...this.$refs.treeRef.getCheckedKeys(),
              ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            // console.log(keys);
            // this.defkeys = keys
            const idstr = keys.join(',')
          const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idstr})
        //   console.log(res);
            if (res.meta.status !== 200) {
               return this.$message.error('添加权限失败!')
            }
            this.$message.success('添加权限成功!')
            this.setRightDialogVisible = false
            this.getRolesList()
            
        },
        // 点击删除角色
       async Deletefunction (id) {
          const {data: res} = await this.$http.delete('roles/'+ id)
        //   console.log(res);
         if (res.meta.status !== 200) {
             return this.$message.error('删除角色失败!')
         }
         this.$message.success('删除角色成功!')
         this.getRolesList()
          
        },
        // 点击弹出对话框
        addRole () {
            // 对话框显示
           this.getaddRole = true
        },
        // 点击添加角色
         postroleData () {
            this.$refs.roleDataRef.validate(async valid => {
            
            if(!valid) return
            // 可以发起添加用户的请求
            const {data: res} = await this.$http.post('roles',this.roleData)
            //  console.log(res);
            if(res.meta.status !==201) {
                return this.$message.error('添加角色失败!')
            }
            this.$message.success('添加角色成功!')
            this.getaddRole = false
            this.getRolesList()
        
        })
        },
         //监听添加用户对话框的关闭事件
            roleDialogClosed () {
            this.$refs.roleDataRef.resetFields()
            }

       
        
    }
    
}
</script>

<style lang="less" scoped>
.el-tag {
    margin:7px;
}
.bdtop {
    border-top: 1px solid #eee;
}
.bdbottom {
    border-bottom: 1px solid #eee;
}
.vcenter {
    display: flex;
    align-items: center;
}
</style>